页面的head部分，需引入两个CSS样式文件，代码如下：

<link type="text/css" rel="stylesheet" href="css/bootstrap.min.css">
<link type="text/css" rel="stylesheet" href="css/bootstrap-fileinput.css">

页面的body部分，div容器里放入一个form表单，代码如下：

<div class="container">
    <div class="page-header">
        <h3>FormData图片上传</h3>
        <form>
            <div class="form-group" id="uploadForm" enctype='multipart/form-data'>
                <div class="h4">图片预览</div>
                <div class="fileinput fileinput-new" data-provides="fileinput"  id="exampleInputUpload">
                    <div class="fileinput-new thumbnail" style="width: 200px;height: auto;max-height:150px;">
                        <img id='picImg' style="width: 100%;height: auto;max-height: 140px;" src="images/noimage.png" alt="" />
                    </div>
                    <div class="fileinput-preview fileinput-exists thumbnail" style="max-width: 200px; max-height: 150px;"></div>
                    <div>
                        <span class="btn btn-primary btn-file">
                            <span class="fileinput-new">选择文件</span>
                            <span class="fileinput-exists">换一张</span>
                            <input type="file" name="pic1" id="picID" accept="image/gif,image/jpeg,image/x-png"/>
                        </span>
                        <a href="javascript:;" class="btn btn-warning fileinput-exists" data-dismiss="fileinput">移除</a>
                    </div>
                </div>
            </div>
            <button type="button" id="uploadSubmit" class="btn btn-info">提交</button>
        </form>
    </div>
</div>

页面的底部，需引入jQuery库和上传插件，设置好上传的相关参数，代码如下：

<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/bootstrap-fileinput.js"></script>
<script type="text/javascript">
$(function () {
    //比较简洁，细节可自行完善
    $('#uploadSubmit').click(function () {
        var data = new FormData($('#uploadForm')[0]);
        $.ajax({
            url: 'xxx/xxx',
            type: 'POST',
            data: data,
            async: false,
            cache: false,
            contentType: false,
            processData: false,
            success: function (data) {
                console.log(data);
                if(data.status){
                    console.log('upload success');
                }else{
                    console.log(data.message);
                }
            },
            error: function (data) {
                console.log(data.status);
            }
        });
    });
})
</script>